CGC-induced longitudinal ridge in p-Pb collisions

27 Nov 2025, 15:00
15m
9409

9409

Speaker

路华 邱 (华中师范大学博士研究生)

Description

Within the Color Glass Condensate (CGC) effective field theory, we investigate the long-range rapidity correlations in proton-lead (p-Pb) collisions at √ s NN = 5.02 TeV. As expected, the long-range rapidity correlations rebound after bottoming, which is successfully reproduced by the CGC. It is also found that the correlation rebound appears around the sum of the saturation momenta of the projectile and target, and moves to larger rapidities at higher collision energies. Beyond that,the longitudinal rapidity correlations are asymmetrically distributed in p-Pb collisions when the transverse momenta of two particles differ, while become symmetric when the transverse momenta of two particles coincide. This feature of rapidity correlations is unique to asymmetric pA collisions,
and directly results from the saturation and the quantum evolution of gluons within the framework
of the CGC.

Primary authors

东海 张 (西华师范大学) 元芳 吴 (华中师范大学) 明梅 许 (华中师范大学) 烨印 赵 (四川轻化工大学) 路华 邱 (华中师范大学博士研究生)

Presentation materials